TWM542145U - Optical image capturing system - Google Patents

Abstract

The invention discloses a three-piece optical lens for capturing image and a five-piece optical module for capturing image. In order from an object side to an image side, the optical lens along the optical axis comprises a first lens with positive refractive power; a second lens with refractive power; and a third lens with refractive power; and at least one of the image-side surface and object-side surface of each of the three lens elements are aspheric. The optical lens can increase aperture value and improve the imagining quality for use in compact cameras.

Description

Optical imaging system (1)

This creation is directed to a group of optical imaging systems, and more particularly to a group of miniaturized optical imaging systems for use in electronic products.

In recent years, with the rise of portable electronic products with photographic functions, the demand for optical systems has increased. Generally, the photosensitive element of the optical system is nothing more than a Charge Coupled Device (CCD) or a Complementary Metal-Oxide Semicondu TP Sensor (CMOS Sensor), and with the advancement of semiconductor process technology, As the size of the pixel of the photosensitive element is reduced, the optical system is gradually developed in the field of high-pixels, and thus the requirements for image quality are increasing.

The optical system conventionally mounted on a portable device mainly uses a two-piece lens structure. However, since the portable device continuously improves the pixels and the end consumer needs for a large aperture such as a low light and night shot function or It is a demand for a wide viewing angle such as the self-timer function of the front lens. However, an optical system designed with a large aperture often faces a situation in which more aberrations cause deterioration in peripheral imaging quality and ease of manufacture, and an optical system that designs a wide viewing angle faces an increase in distortion of imaging, which is conventionally known. Optical imaging systems have been unable to meet higher-order photography requirements.

Therefore, how to effectively increase the amount of light entering the optical imaging lens and increase the angle of view of the optical imaging lens, in addition to further improving the overall pixel and quality of imaging, while taking into account the balanced design of the miniaturized optical imaging lens, has become a very important issue.

The embodiment of the present invention is directed to an optical imaging system and an optical image capturing lens, which can utilize the combination of the refractive power, the convex surface and the concave surface of the three lenses (the convex or concave surface of the present invention refers in principle to the object side of each lens). Or as described by the geometry of the side on the optical axis), thereby effectively increasing the amount of light entering the optical imaging system and increasing the viewing angle of the optical imaging lens. Improve the overall picture quality and quality of imaging for small electronic products.

The terminology of the mechanism component parameters related to the present embodiment and its code are as follows. For reference of the following description: Referring to FIG. 7, the optical imaging system may include an image sensing module (not shown), and the image sensing system The module includes a substrate and a photosensitive element disposed on the substrate; the optical imaging system may further include a lens positioning component 794 that is hollow and can accommodate any lens and arrange the lens sheets on the optical axis The lens positioning member includes an object end portion 796 and an image end portion 798. The object end portion 796 is adjacent to the object side and has a first opening 7792. The image end portion 798 has a second opening 7982 near the image side. The outer wall of the lens positioning member 794 includes two tangent planes 799, each of which has a shaped nip mark 7992. The inner diameter of the first opening 7792 is OD, and the inner diameter of the second opening 7982 is ID, which satisfies the following condition: 0.1 ≦ OD / ID ≦ 10. The minimum thickness of the object end 796 is OT and the minimum thickness of the image end 798 is IT, which satisfies the following condition: 0.1 ≦ OT / IT ≦ 10.

Referring to FIG. 8 , the optical imaging system may include an image sensing module (not shown), the image sensing module includes a substrate and a photosensitive element disposed on the substrate; the optical imaging system may further include a The lens positioning member 894 is hollow and can accommodate any lens, and the lens sheets are arranged on the optical axis. The lens positioning member includes an object end portion 896 and an image end portion 898. The object end portion 896. Close to the object side and having a first opening 8962, the image end 898 has a second opening 8982 near the image side, and the outer wall of the lens positioning component 894 includes three tangent planes 899, each of which has a molding nozzle Mark 8992. The inner diameter of the first opening 8962 is OD, and the inner diameter of the second opening 8982 is ID, which satisfies the following condition: 0.1 ≦ OD / ID ≦ 10. The minimum thickness of the object end 896 is OT and the minimum thickness of the image end portion 898 is IT, which satisfies the following condition: 0.1 ≦ OT / IT ≦ 10.

The terms of the lens parameters associated with the present embodiment and their code numbers are listed below as a reference for subsequent description: lens parameters related to length or height.

The imaging height of the optical imaging system is represented by HOI; the height of the optical imaging system is represented by HOS; the distance from the first lens side of the optical imaging system to the side of the third lens image is represented by InTL; and the third lens image side of the optical imaging system The distance to the imaging plane is represented by InB; InTL+InB=HOS; the distance between the fixed diaphragm (aperture) of the optical imaging system to the imaging plane is represented by InS; The distance between the first lens and the second lens of the imaging system is indicated by IN12 (exemplary); the thickness of the first lens of the optical imaging system on the optical axis is represented by TP1 (exemplary).

Material-related lens parameters

The dispersion coefficient of the first lens of the optical imaging system is represented by NA1 (exemplary); the law of refraction of the first lens is represented by Nd1 (exemplary).

Lens parameters related to viewing angle

The angle of view is represented by AF; half of the angle of view is represented by HAF; the angle of the chief ray is expressed by MRA.

Lens parameters related to access

The entrance pupil diameter of the optical imaging system is represented by HEP; the maximum effective radius of any surface of the single lens refers to the maximum viewing angle of the system through which the incident light passes through the edge of the entrance pupil at the intersection surface (Effective Half Diameter (EHD)). The vertical height between the intersection point and the optical axis. For example, the maximum effective radius of the side of the first lens is represented by EHD11, and the maximum effective radius of the side of the first lens image is represented by EHD12. The maximum effective radius of the side of the second lens is represented by EHD 21, and the maximum effective radius of the side of the second lens image is represented by EHD 22. The maximum effective radius representation of any of the remaining lenses in the optical imaging system is analogous.

Parameters related to the lens arc length and surface profile

The length of the profile curve of the maximum effective radius of any surface of a single lens refers to the intersection of the surface of the lens and the optical axis of the associated optical imaging system, starting from the starting point along the surface contour of the lens until The end of the maximum effective radius, the arc length between the above two points is the length of the contour curve of the maximum effective radius, and is represented by ARS. For example, the profile curve length of the maximum effective radius of the side of the first lens object is represented by ARS11, and the profile curve length of the maximum effective radius of the side of the first lens image is represented by ARS12. The profile curve length of the maximum effective radius of the side of the second lens object is represented by ARS21, and the profile curve length of the maximum effective radius of the side of the second lens image is represented by ARS22. The maximum effective radius profile curve length representation of any of the remaining lenses in the optical imaging system is analogous.

The length of the profile curve of the 1/2 incident pupil diameter (HEP) of any surface of a single lens means that the intersection of the surface of the lens and the optical axis of the associated optical imaging system is the starting point from which the starting point The surface profile of the lens is up to the coordinate point of the vertical height of the pupil diameter from the optical axis 1/2 incident on the surface, and the curve arc length between the two points is 1/2 the diameter of the entrance pupil diameter (HEP), and ARE said. For example, the 1/2 incident pupil diameter (HEP) of the side of the first lens object The length of the contour curve is represented by ARE11, and the length of the contour curve of the 1/2 incident pupil diameter (HEP) of the side of the first lens image is represented by ARE12. The length of the contour curve of the 1/2 incident pupil diameter (HEP) of the side surface of the second lens object is represented by ARE21, and the length of the contour curve of the 1/2 incident pupil diameter (HEP) of the side surface of the second lens image is represented by ARE22. The profile length representation of the 1/2 incident pupil diameter (HEP) of any of the remaining lenses in the optical imaging system is analogous.

Parameters related to the depth of the lens profile

The horizontal displacement distance of the third lens object from the intersection of the side on the optical axis to the maximum effective radius of the side of the third lens object on the optical axis is represented by InRS31 (exemplary); the intersection of the third lens image side on the optical axis to the third The horizontal displacement distance of the largest effective radius position of the lens image side on the optical axis is represented by InRS32 (exemplary).

Parameters related to the lens surface

The critical point C refers to a point on the surface of a specific lens that is tangent to a plane perpendicular to the optical axis except for the intersection with the optical axis. For example, the vertical distance C21 of the side surface of the second lens object is perpendicular to the optical axis HVT21 (exemplary), and the vertical distance C22 of the side surface of the second lens image is perpendicular to the optical axis HVT22 (exemplary), the third lens The vertical distance between the critical point C31 of the side surface and the optical axis is HVT31 (exemplary), and the vertical distance between the critical point C32 of the third lens image side and the optical axis is HVT32 (exemplary). The critical point on the side or image side of the other lens and its vertical distance from the optical axis are expressed in the same manner as described above.

The inflection point closest to the optical axis on the side of the third lens object is IF311, and the point sinking amount SGI311 (exemplary), that is, the intersection of the side surface of the third lens object on the optical axis to the optical axis of the third lens object side The horizontal displacement distance between the inflection points parallel to the optical axis, and the vertical distance between the point and the optical axis of the IF311 is HIF311 (exemplary). The inflection point closest to the optical axis on the side of the third lens image is IF321, the sinking amount SGI321 (exemplary), that is, the intersection of the side of the third lens image on the optical axis to the optical axis of the third lens image side. The horizontal displacement distance between the inflection points parallel to the optical axis, and the vertical distance between the point and the optical axis of the IF321 is HIF321 (exemplary).

The inflection point of the second near optical axis on the side of the third lens object is IF312, the point sinking amount SGI312 (exemplary), that is, the intersection of the side of the third lens object on the optical axis to the side of the third lens object is second. The horizontal displacement distance between the inflection points of the optical axis and the optical axis, and the vertical distance between the point and the optical axis of the IF 312 is HIF 312 (exemplary). The inflection point of the second near optical axis on the side of the third lens image is IF322, the sinking amount SGI322 (exemplary), and the SGI 322, that is, the third lens image side The horizontal displacement distance from the intersection on the optical axis to the inflection point of the second lens image side near the optical axis is parallel to the optical axis, and the vertical distance between the point and the optical axis of the IF 322 is HIF 322 (exemplary).

The inflection point of the third near-optical axis on the side of the third lens object is IF313, and the point sinking amount SGI313 (exemplary), that is, the intersection of the side of the third lens object on the optical axis and the side of the third lens object is the third closest. The horizontal displacement distance between the inflection point of the optical axis and the optical axis, and the vertical distance between the point and the optical axis of IF3132 is HIF313 (exemplary). The inflection point of the third near-optical axis on the side of the third lens image is IF323, the point sinking amount SGI323 (exemplary), that is, the SGI 323, that is, the intersection of the side of the third lens image on the optical axis and the third lens image side is the third closest. The horizontal displacement distance between the inflection points of the optical axis and the optical axis, and the vertical distance between the point and the optical axis of the IF323 is HIF323 (exemplary).

The inflection point of the fourth near-optical axis on the side of the third lens object is IF314, and the point sinking amount SGI314 (exemplary), that is, the intersection of the side of the third lens object on the optical axis and the side of the third lens object is fourth. The horizontal displacement distance between the inflection point of the optical axis and the optical axis, and the vertical distance between the point and the optical axis of IF314 is HIF314 (exemplary). The inflection point of the fourth near-optical axis on the side of the third lens image is IF324, and the point sinking amount SGI324 (exemplary), that is, the intersection of the side of the third lens image on the optical axis and the side of the third lens image is fourth. The horizontal displacement distance between the inflection point of the optical axis and the optical axis, and the vertical distance between the point and the optical axis of the IF324 is HIF324 (exemplary).

The inflection point on the side or image side of the other lens and its vertical distance from the optical axis or the amount of its sinking are expressed in the same manner as described above.

Variant related to aberration

Optical Distortion of an optical imaging system is represented by ODT; its TV Distortion is represented by TDT, and can further define the degree of aberration shift described between imaging 50% to 100% of field of view; spherical aberration bias The shift is represented by DFS; the comet aberration offset is represented by DFC.

The lateral aberration of the aperture edge is expressed by STA (STOP Transverse Aberration), and the performance of the specific optical imaging system is evaluated. The ray lateral direction of any field of view can be calculated by using a tangential fan or a sagittal fan. The aberrations, in particular, the calculation of the longest operating wavelength (for example, a wavelength of 650 NM) and the shortest operating wavelength (for example, a wavelength of 470 NM) by the lateral aberration magnitude of the aperture edge are excellent criteria for performance. The coordinate direction of the aforementioned meridional surface fan can be further divided into a positive direction (upper ray) and a negative direction (lower ray). The longest working wavelength passes through the lateral aberration of the aperture edge, which is defined as the longest working wavelength incident on the imaging plane through the aperture edge. The imaging position of the field, which is the difference between the two positions of the reference position of the reference wavelength of the chief ray of the reference wavelength (for example, 555 NM) on the imaging plane, and the shortest working wavelength is defined as the shortest operation through the lateral aberration of the aperture edge. The wavelength is incident on the imaging surface of the specific field of view on the imaging plane through the edge of the aperture, and the difference between the two positions of the reference position of the reference wavelength of the reference ray on the imaging plane is excellent, and the performance of the specific optical imaging system is evaluated as excellent. Using the shortest and longest working wavelengths through the aperture edge incident on the imaging surface 0.7 field of view (ie 0.7 imaging height HOI) lateral aberrations are less than 100 micrometers (μm) as a check method, and even further through the shortest and longest operating wavelength The aperture aberration is incident on the imaging surface. The lateral aberration of the field of view is less than 80 micrometers (μm) as the inspection mode.

The optical imaging system has a maximum imaging height HOI perpendicular to the optical axis on the imaging plane, and the longest working wavelength of the visible light of the positive meridional plane of the optical imaging system passes through the entrance pupil edge and is incident on the imaging plane at a lateral angle of 0.7 HOI The aberration is expressed by PLTA, and the shortest working wavelength of the visible light of the forward meridional fan passes through the entrance pupil edge and is incident on the imaging plane. The lateral aberration at 0.7HOI is represented by PSTA, and the negative visible light of the meridional plane fan is the longest. The transverse wavelength of the working wavelength passing through the edge of the entrance pupil and incident on the imaging plane at 0.7HOI is represented by NLTA, and the shortest visible wavelength of the visible light of the negative meridional plane fan passes through the entrance pupil edge and is incident on the imaging plane 0.7HOI The lateral aberration is represented by NSTA. The longest visible wavelength of the visible light of the sagittal plane fan passes through the entrance pupil edge and is incident on the imaging plane. The lateral aberration at 0.7HOI is represented by SLTA. The shortest visible wavelength of the visible light of the sagittal plane fan The lateral aberration passing through the entrance pupil edge and incident on the imaging plane at 0.7 HOI is represented by SSTA.

The present invention provides an optical imaging system in which an object side or an image side of a third lens is provided with an inflection point, which can effectively adjust the angle at which each field of view is incident on the third lens, and correct for optical distortion and TV distortion. In addition, the surface of the third lens can have better optical path adjustment capability to improve image quality.

According to the present invention, there is provided an optical imaging system comprising a first lens, a second lens, a third lens, a lens positioning element, and an imaging surface sequentially from the object side to the image side. The lens positioning component is hollow and can accommodate any lens, and the lens segments are arranged on the optical axis. The lens positioning component includes an object end and an image end, and the object end is close to the object side. And having a first opening, the image end has a second opening near the image side, and the outer wall of the lens positioning component comprises at least two flattening The cutting planes each have at least one shaped irrigant. The first lens has a refractive power. The object side surface and the image side surface of the third lens are all aspherical surfaces, and the focal lengths of the first lens to the third lens are f1, f2, and f3, respectively, and the focal length of the optical imaging system is f, and the incident angle of the optical imaging system The diameter is HEP, the first lens object side has a distance HOS on the optical axis, and the first lens object side to the third lens image side has a distance InTL on the optical axis, the optical imaging system Half of the maximum viewing angle is HAF, and the intersection of any surface of any of the lenses with the optical axis is the starting point, and the contour of the surface is extended until the vertical height of the surface of the surface is 1/2 from the optical axis. Up to the coordinate point, the profile curve length between the above two points is ARE, which satisfies the following conditions: 1≦f/HEP≦10; 0deg<HAF≦150deg and 0.9≦2(ARE/HEP)≦2.0.

According to the present invention, there is further provided an optical imaging system comprising a first lens, a second lens, a third lens, a lens positioning element and an imaging surface sequentially from the object side to the image side. The lens positioning component is hollow and can accommodate any lens, and the lens segments are arranged on the optical axis. The lens positioning component includes an object end and an image end, and the object end is close to the object side. And having a first opening, the image end has a second opening near the image side, and the outer wall of the lens positioning element comprises at least two cutting planes, each of the cutting planes having at least one shaped burr mark. The optical imaging system has three lenses having a refractive power and at least one surface of at least two of the first lens to the third lens has at least one inflection point, and at least the second lens to the third lens A lens has a positive refractive power, a focal length of the first lens to the third lens is f1, f2, and f3, respectively, a focal length of the optical imaging system is f, and an incident pupil diameter of the optical imaging system is HEP, the first lens The object side surface to the imaging surface has a distance HOS on the optical axis, the first lens object side to the third lens image side has a distance InTL on the optical axis, and the half of the maximum viewing angle of the optical imaging system is HAF. The intersection of any surface of any of the lenses and the optical axis is a starting point, and the contour of the surface is extended until the coordinate point on the surface at a vertical height from the optical axis 1/2 incident 瞳 diameter, the above two points The profile curve length is ARE, which satisfies the following conditions: 1 ≦ f / HEP ≦ 10; 0 deg < HAF ≦ 150 deg and 0.9 ≦ 2 (ARE / HEP) ≦ 2.0.

According to the present invention, there is further provided an optical imaging system comprising, in order from the object side to the image side, a first lens, a second lens, a third lens, a lens positioning element and an imaging surface. Wherein the lens positioning component is hollow and can accommodate any lens, and the The lens is arranged on the optical axis, the lens positioning component includes an object end portion and an image end portion, the object end portion is adjacent to the object side and has a first opening, the image end portion has a second opening near the image side, The outer wall of the lens positioning element comprises at least three tangential planes each having at least one shaped irrigant. The lens of the optical imaging system having a refractive power is three, and at least one surface of each of the first lens to the second lens has at least one inflection point, and the focal lengths of the first lens to the third lens are respectively For f1, f2, f3, the focal length of the optical imaging system is f, the incident pupil diameter of the optical imaging system is HEP, and the first lens side to the imaging surface has a distance HOS on the optical axis, the first lens The side of the object to the third lens image side has a distance InTL on the optical axis, and half of the maximum viewing angle of the optical imaging system is HAF, and the intersection of any surface of any of the lenses and the optical axis is the starting point. The contour of the surface is extended until the coordinate point on the surface at a vertical height from the optical axis 1/2 incident 瞳 diameter, and the length of the contour curve between the two points is ARE, which satisfies the following condition: 1≦f/HEP≦ 10; 0deg < HAF ≦ 150 deg and 0.9 ≦ 2 (ARE/HEP) ≦ 2.0.

The length of the contour curve of any surface of a single lens in the range of the maximum effective radius affects the surface correction aberration and the optical path difference between the fields of view. The longer the profile curve length, the better the ability to correct the aberration, but at the same time It will increase the difficulty in manufacturing, so it is necessary to control the length of the profile curve of any surface of the single lens within the maximum effective radius, in particular to control the profile length (ARS) and the surface within the maximum effective radius of the surface. The proportional relationship (ARS/TP) between the thicknesses (TP) of the lens on the optical axis. For example, the length of the contour curve of the maximum effective radius of the side surface of the first lens object is represented by ARS11, and the thickness of the first lens on the optical axis is TP1, and the ratio between the two is ARS11/TP1, and the maximum effective radius of the side of the first lens image is The length of the contour curve is represented by ARS12, and the ratio between it and TP1 is ARS12/TP1. The length of the contour curve of the maximum effective radius of the side surface of the second lens object is represented by ARS21, the thickness of the second lens on the optical axis is TP2, the ratio between the two is ARS21/TP2, and the contour of the maximum effective radius of the side of the second lens image The length of the curve is represented by ARS22, and the ratio between it and TP2 is ARS22/TP2. The proportional relationship between the length of the profile of the maximum effective radius of any of the remaining lenses in the optical imaging system and the thickness (TP) of the lens on the optical axis to which the surface belongs, and so on.

The length of the profile curve of any surface of a single lens in the range of 1/2 incident pupil diameter (HEP) particularly affects the corrected aberrations on the surface of the common field of view of each ray and each The ability to adjust the optical path difference between the fields of light. The longer the length of the contour curve, the better the ability to correct the aberration. However, it also increases the difficulty in manufacturing. Therefore, it is necessary to control either surface of the single lens at 1/2 incidence. The length of the profile curve in the height range of the diameter (HEP), in particular the length of the profile curve (ARE) within the height range of 1/2 of the entrance pupil diameter (HEP) of the surface and the thickness of the lens on the optical axis to which the surface belongs The proportional relationship between (TP) (ARE/TP). For example, the length of the profile curve of the 1/2 incident pupil diameter (HEP) height of the side surface of the first lens object is represented by ARE11, and the thickness of the first lens on the optical axis is TP1, and the ratio between the two is ARE11/TP1. The profile curve length of the 1/2 incident pupil diameter (HEP) height of the mirror side is represented by ARE12, and the ratio between it and TP1 is ARE12/TP1. The length of the profile curve of the 1/2 incident pupil diameter (HEP) height of the side surface of the second lens object is represented by ARE21. The thickness of the second lens on the optical axis is TP2, and the ratio between the two is ARE21/TP2, and the second lens image The profile curve length of the 1/2 incident pupil diameter (HEP) height of the side is represented by ARE22, and the ratio between it and TP2 is ARE22/TP2. The proportional relationship between the length of the contour curve of the 1/2 incident pupil diameter (HEP) height of any surface of the remaining lenses in the optical imaging system and the thickness (TP) of the lens on the optical axis to which the surface belongs, expressed by This type of push.

The optical imaging system can be used to image an image sensing component having a diagonal length of 1/1.2 inch or less. The image sensing component has a pixel size of less than 1.4 micrometers (μm), preferably a pixel size of less than 1.12. Micron (μm), the best pixel size is less than 0.9 micron (μm). In addition, the optical imaging system can be applied to image sensing elements with an aspect ratio of 16:9.

The aforementioned optical imaging system can be used for video recording requirements of more than megapixels and has good imaging quality.

When |f1|>f3, the total imaging height (HOS; Height of Optic System) of the optical imaging system can be appropriately shortened to achieve miniaturization.

When |f2|>|f1|, the second lens has a weak positive refractive power or a weak negative refractive power. When the second lens of the present invention has a weak positive refractive power, it can effectively share the positive refractive power of the first lens to avoid premature occurrence of unnecessary aberrations, and if the second lens has a weak negative refractive power, it can be finely adjusted. Correct the aberration of the system.

The third lens may have a positive refractive power, and the image side may be a concave surface. Thereby, it is advantageous to shorten the back focal length to maintain miniaturization. In addition, at least one surface of the third lens may have at least one inflection point, which can effectively suppress the incident angle of the off-axis field of view light, and further correct the off-axis The aberration of the field of view.

10, 20, 30, 40, 50, 60‧‧‧ optical imaging systems

100, 200, 300, 400, 500, 600‧‧ ‧ aperture

110, 210, 310, 410, 510, 610, 710, 810 ‧ ‧ first lens

Sides of 112, 212, 312, 412, 512, 612‧‧

114, 214, 314, 414, 514, 614‧‧‧ side

120, 220, 320, 420, 520, 620, 720, 820‧‧‧ second lens

Sides of 122, 222, 322, 422, 522, 622‧‧

124, 224, 324, 424, 524, 624‧‧‧ side

130, 230, 330, 430, 530, 630, 730, 830 ‧ ‧ third lens

132, 232, 332, 432, 532, 632‧‧‧ ‧ side

134, 234, 334, 434, 534, 634 ‧ ‧ side

170, 270, 370, 470, 570, 670‧‧ ‧ infrared filters

180, 280, 380, 480, 580, 680, 780, 880 ‧ ‧ imaging surface

190, 290, 390, 490, 590, 690‧‧‧ image sensing components

794, 894‧‧‧ lens positioning elements

796, 896‧‧ ‧ end

798, 898‧‧‧ like the end

7962, 8962‧‧‧ first opening

7982, 8982‧‧‧ second opening

799, 899‧‧‧ cut plane

7992, 8992‧‧‧ molding mouth mark

F‧‧‧focal length of optical imaging system

F1‧‧‧The focal length of the first lens

F2‧‧‧The focal length of the second lens

f3‧‧‧The focal length of the third lens

f/HEP; Fno; F#‧‧‧ aperture value of optical imaging system

Half of the largest perspective of the HAF‧‧ optical imaging system

NA1, NA2, NA3‧‧‧ are the dispersion coefficients of the first lens to the third lens, respectively

R1, R2‧‧‧ radius of curvature of the side of the first lens and the side of the image

R3, R4‧‧‧ radius of curvature of the side and image side of the second lens

R5, R6‧‧‧ radius of curvature of the side and image side of the third lens

TP1, TP2, TP3‧‧‧ are the thickness of the first lens to the third lens on the optical axis, respectively

TP TP‧‧‧sum of the thickness of all refractive lenses

IN12‧‧‧The distance between the first lens and the second lens on the optical axis

IN23‧‧‧Separation distance between the second lens and the third lens on the optical axis

InRS31‧‧‧ Horizontal displacement distance of the third lens from the intersection of the side on the optical axis to the maximum effective radius of the side of the third lens on the optical axis

The horizontal displacement distance of the InRS32‧‧‧ third lens image from the intersection of the side on the optical axis to the maximum effective radius of the side of the third lens image on the optical axis

IF212‧‧‧ the second inversion point on the side of the second lens object close to the optical axis

SGI212‧‧‧The amount of subsidence at this point

HIF212‧‧‧Second lens object side second close to the optical axis of the inflection point and the vertical distance between the optical axis

IF222‧‧‧The second lens image on the side of the second near the optical axis of the inflection point

SGI222‧‧‧The amount of subsidence at this point

HIF222‧‧‧Separate distance between the inflection point of the second lens image side and the optical axis

IF311‧‧‧ the point of recurve closest to the optical axis on the side of the third lens

SGI311‧‧‧The amount of subsidence at this point

HIF311‧‧‧The vertical distance between the inflection point closest to the optical axis on the side of the third lens and the optical axis

IF321‧‧‧The third lens is the side of the image that is closest to the optical axis

SGI321‧‧‧The amount of subsidence at this point

HIF321‧‧‧The vertical distance between the inflection point closest to the optical axis on the side of the third lens image and the optical axis

IF312‧‧‧ the second invisible point on the side of the third lens

SGI312‧‧‧The amount of subsidence at this point

HIF312‧‧‧The distance between the inflection point of the second near-optical axis of the third lens object and the optical axis

IF322‧‧‧ Third lens image on the side of the second near the optical axis of the inflection point

SGI322‧‧‧The amount of subsidence at this point

HIF322‧‧‧The third lens is the vertical distance between the inflection point of the second near-optical axis and the optical axis

IF313‧‧‧ Third inversion of the third lens near the optical axis

SGI313‧‧‧The amount of subsidence at this point

HIF313‧‧‧The third lens object side of the third close to the optical axis of the inflection point and the vertical distance between the optical axis

IF323‧‧‧ Third lens image on the side of the third near the optical axis of the inflection point

SGI323‧‧‧The amount of subsidence

HIF323‧‧‧The third lens is the vertical distance between the inflection point of the third near-optical axis and the optical axis

C31‧‧‧The critical point on the side of the third lens

C32‧‧‧The critical point of the third lens image side

SGC31‧‧‧ Horizontal displacement distance from the critical point of the third lens to the optical axis

SGC32‧‧‧ Horizontal displacement distance between the critical point of the third lens image side and the optical axis

HVT31‧‧‧The vertical distance between the critical point of the third lens object and the optical axis

HVT32‧‧‧The vertical distance between the critical point of the third lens image side and the optical axis

Total height of the HOS‧‧‧ system (distance from the side of the first lens to the optical axis of the imaging surface)

Diagonal length of Dg‧‧ image sensing components

InS‧‧‧ aperture to imaging surface distance

InTL‧‧‧Distance of the side of the first lens to the side of the third lens

InB‧‧‧Distance of the third lens image from the side to the imaging surface

HOI‧‧‧ image sensing element effectively detects half of the diagonal length of the area (maximum image height)

TV Distortion of TDT‧‧‧ optical imaging system during image formation

Optical Distortion of ODT‧‧‧Optical Imaging System in Image Formation

The above and other features of the present invention will be described in detail with reference to the drawings.

1A is a schematic view showing the optical imaging system of the first embodiment of the present invention; FIG. 1B is a left-to-right sequence showing the spherical aberration, astigmatism, and optical distortion of the optical imaging system of the first embodiment of the present invention. 1C is a transverse aberration diagram of a meridional plane fan and a sagittal plane fan of the optical imaging system of the first embodiment of the present invention, the longest working wavelength and the shortest working wavelength passing through the aperture edge at 0.7 field of view; 2A is a schematic diagram showing an optical imaging system of a second embodiment of the present invention; FIG. 2B is a left-to-right sequence showing spherical aberration, astigmatism, and optical distortion of the optical imaging system of the second embodiment of the present invention. 2C is a transverse aberration diagram of the meridional plane fan and the sagittal plane fan of the optical imaging system of the second embodiment of the present invention, the longest working wavelength and the shortest working wavelength passing through the aperture edge at 0.7 field of view; 3A is a schematic view showing the optical imaging system of the third embodiment of the present creation; FIG. 3B is a left-to-right sequence showing the spherical aberration, astigmatism, and optical distortion of the optical imaging system of the third embodiment of the present invention. song Figure 3C is a transverse aberration diagram of the meridional surface fan and the sagittal plane fan of the optical imaging system of the third embodiment of the present invention, the longest working wavelength and the shortest working wavelength passing through the aperture edge at 0.7 field of view; 4A is a schematic view showing the optical imaging system of the fourth embodiment of the present invention; FIG. 4B is a left-to-right sequence showing the spherical aberration, astigmatism and optical distortion of the optical imaging system of the fourth embodiment of the present invention. Graph; 4C is a transverse aberration diagram of the meridional plane fan and the sagittal plane fan of the optical imaging system of the fourth embodiment of the present invention, the longest working wavelength and the shortest working wavelength passing through the aperture edge at 0.7 field of view; FIG. 5A A schematic diagram showing an optical imaging system of a fifth embodiment of the present invention; FIG. 5B is a graph showing spherical aberration, astigmatism, and optical distortion of the optical imaging system of the fifth embodiment of the present invention from left to right; 5C is a transverse aberration diagram of the meridional surface fan and the sagittal plane fan of the optical imaging system of the fifth embodiment of the present invention, the longest working wavelength and the shortest working wavelength passing through the aperture edge at 0.7 field of view; FIG. 6A The schematic diagram of the optical imaging system of the sixth embodiment of the present invention is shown; FIG. 6B is a graph showing the spherical aberration, astigmatism and optical distortion of the optical imaging system of the sixth embodiment of the present invention from left to right; 6C is a transverse aberration diagram of the meridional surface fan and the sagittal plane fan of the optical imaging system of the sixth embodiment of the present invention, the longest working wavelength and the shortest working wavelength passing through the aperture edge at 0.7 field of view.

7A is a perspective side view showing the lens positioning member of the first embodiment of the present invention; FIG. 7B is a plan view showing the lens positioning member of the first embodiment of the present invention, and the second opening of the self-image end portion in a plan view direction. a first opening facing the end of the object, the outer wall of the lens positioning member has two tangential planes, each of the tangential planes having a forming irrigant mark; and FIG. 7C is a view showing the lens locating element of the first embodiment of the present invention FIG. 8A is a perspective side view showing the lens positioning elements of the second to sixth embodiments of the present invention; FIG. 8B is a view showing the lens positioning elements of the second to sixth embodiments of the present invention. a top view from the second opening of the image end toward the first opening of the object end, the lens is fixed The outer wall of the bit member has three tangential planes, each of which has a forming burr mark; and FIG. 8C is a cross-sectional view showing the lens locating elements of the second to sixth embodiments of the present invention.

A group of optical imaging systems comprising a first lens, a second lens and a third lens having a refractive power in sequence from the object side to the image side. The optical imaging system can further include an image sensing component disposed on the imaging surface.

The optical imaging system was designed using five operating wavelengths, 470 nm, 510 nm, 555 nm, 610 nm, 650 nm, with 555 nm being the primary reference wavelength and serving as the reference wavelength for the main extraction technique. Regarding the extraction of the lateral aberration values of the longest working wavelength and the shortest working wavelength through the aperture edge, the longest operating wavelength is 650 NM, the reference wavelength chief ray wavelength is 555 NM, and the shortest operating wavelength is 470 NM.

The ratio of the focal length f of the optical imaging system to the focal length fp of each lens having a positive refractive power, the ratio of the focal length f of the optical imaging system to the focal length fn of each lens having a negative refractive power, NPR, all positive refractive power lenses The sum of the PPRs is Σ PPR, and the sum of the NPRs of all lenses with negative refractive power is Σ NPR, which helps to control the total refractive power and total length of the optical imaging system when the following conditions are met: 0.5≦Σ PPR/|Σ NPR|≦ 4.5. Preferably, the following conditions are satisfied: 1 ≦Σ PPR / | Σ NPR | ≦ 3.8.

The system height of the optical imaging system is HOS. When the HOS/f ratio approaches 1, it will be advantageous to make a miniaturized and imageable ultra-high pixel optical imaging system.

The sum of the focal lengths fp of each piece of the optical imaging system having a positive refractive power is Σ PP, and the sum of the focal lengths of the lenses each having a negative refractive power is Σ NP, an embodiment of the optical imaging system of the present invention, which satisfies the following Conditions: 0 < Σ PP ≦ 200; and f1/Σ PP ≦ 0.85. Preferably, the following conditions are satisfied: 0 < Σ PP ≦ 150; and 0.01 ≦ f1/Σ PP ≦ 0.6. Thereby, it is helpful to control the focusing ability of the optical imaging system, and to properly distribute the positive refractive power of the system to suppress the occurrence of significant aberrations prematurely. The first lens may have a positive refractive power and the object side may be convex. Thereby, the positive refractive power of the first lens can be appropriately adjusted to help shorten the total length of the optical imaging system.

The second lens can have a negative refractive power. Thereby, the first lens can be corrected Aberration.

The third lens may have a positive refractive power, and the image side may be a concave surface. Thereby, in addition to sharing the positive refractive power of the first lens and facilitating shortening of the back focal length to maintain miniaturization. In addition, at least one surface of the third lens may have at least one inflection point, which can effectively suppress the angle of incidence of the off-axis field of view light, and further correct the aberration of the off-axis field of view. Preferably, both the object side and the image side have at least one inflection point.

The optical imaging system can further include an image sensing component disposed on the imaging surface. The half of the diagonal length of the effective sensing area of the image sensing element (ie, the imaging height or the maximum image height of the optical imaging system) is HOI, and the distance from the side of the first lens to the optical axis of the imaging surface is HOS, The following conditions were met: HOS/HOI≦3; and 0.5≦HOS/f≦3.0. Preferably, the following conditions are satisfied: 1 ≦ HOS / HOI ≦ 2.5; and 1 ≦ HOS / f ≦ 2. Thereby, the miniaturization of the optical imaging system can be maintained to be mounted on a thin and portable electronic product.

In addition, in the optical imaging system of the present invention, at least one aperture can be set according to requirements to reduce stray light and help to improve image quality.

In the optical imaging system of the present invention, the aperture configuration may be a front aperture or a center aperture, wherein the front aperture means that the aperture is disposed between the object and the first lens, and the center aperture means that the aperture is disposed on the first lens and Between the imaging surfaces. If the aperture is a front aperture, the optical imaging system can make a long distance between the exit pupil and the imaging surface to accommodate more optical components, and increase the efficiency of the image sensing component to receive images; if it is a center aperture, Helps to expand the system's field of view, giving optical imaging systems the advantage of a wide-angle lens. The distance from the aforementioned aperture to the imaging surface is InS, which satisfies the following condition: 0.5 ≦ InS/HOS ≦ 1.1. Preferably, the following conditions are satisfied: 0.6 ≦ InS/HOS ≦ 1 whereby the miniaturization of the optical imaging system and the wide-angle characteristics can be maintained at the same time.

In the optical imaging system of the present invention, the distance between the side of the first lens object and the side of the third lens image is InTL, and the total thickness of all the lenses having refractive power on the optical axis is Σ TP, which satisfies the following condition: 0.45 ≦Σ TP /InTL≦0.95. Thereby, the contrast of the system imaging and the yield of the lens manufacturing can be simultaneously taken into consideration and an appropriate back focus can be provided to accommodate other components.

The radius of curvature of the side surface of the first lens object is R1, and the radius of curvature of the side surface of the first lens image is R2, which satisfies the following condition: 0.1 ≦ | R1/R2 | ≦ 3.0. Thereby, the first lens is provided with an appropriate positive refractive power to prevent the spherical aberration from increasing excessively. Preferably, the following conditions are met: 0.1 ≦|R1/R2|≦2.0.

The radius of curvature of the side surface of the third lens object is R9, and the radius of curvature of the side surface of the third lens image is R10, which satisfies the following condition: -200 < (R5 - R6) / (R5 + R6) < 30. Thereby, it is advantageous to correct the astigmatism generated by the optical imaging system.

The distance between the first lens and the second lens on the optical axis is IN12, which satisfies the following condition: 0 < IN12 / f ≦ 0.30. Preferably, the following conditions are satisfied: 0.01 ≦ IN12/f ≦ 0.25. Thereby, it helps to improve the chromatic aberration of the lens to improve its performance.

The distance between the second lens and the third lens on the optical axis is IN23, which satisfies the following condition: IN23/f ≦ 0.25. This helps to improve the chromatic aberration of the lens to improve its performance.

The thicknesses of the first lens and the second lens on the optical axis are TP1 and TP2, respectively, which satisfy the following conditions: 2≦(TP1+IN12)/TP2≦10. Thereby, it helps to control the sensitivity of the optical imaging system manufacturing and improve its performance.

The thickness of the third lens on the optical axis is TP3, and the distance between the second lens and the second lens on the optical axis is IN23, which satisfies the following condition: 1.0 ≦ (TP3 + IN23) / TP2 ≦ 10. Thereby, it helps to control the sensitivity of the optical imaging system manufacturing and reduce the overall height of the system.

In the optical imaging system of the present invention, the following conditions are satisfied: 0.1 ≦ TP1/TP 2 ≦ 0.6; 0.1 ≦ TP 2 / TP 3 ≦ 0.6. Thereby, the layer is slightly modified to correct the aberration generated by the incident light and reduce the total height of the system.

In the optical imaging system of the present invention, the horizontal displacement distance of the third lens object side surface 132 from the intersection on the optical axis to the maximum effective radius position of the third lens object side 132 on the optical axis is InRS31 (if the horizontal displacement is toward the image side, InRS31 Positive value; if the horizontal displacement is toward the object side, InRS31 is a negative value), the horizontal displacement distance of the third lens image side 134 on the optical axis to the third lens image side 134 at the maximum effective radius position on the optical axis is InRS32 The thickness of the third lens 130 on the optical axis is TP3, which satisfies the following conditions: -1 mm ≦ InRS 31 ≦ 1 mm; -1 mm ≦ InRS 32 ≦ 1 mm; 1 mm ≦ | InRS31 | + | InRS32 | ≦ 2 mm; 0.01 ≦ | InRS31 | /TP3≦10; 0.01≦|InRS32|/TP3≦10. Thereby, the position of the maximum effective radius between the two faces of the third lens can be controlled, which contributes to the aberration correction of the peripheral field of view of the optical imaging system and effectively maintains the miniaturization thereof.

In the optical imaging system of the present invention, the horizontal displacement distance parallel to the optical axis between the intersection of the side of the third lens object on the optical axis and the inversion point of the optical axis of the third lens object side is SGI311 indicates that the horizontal displacement distance parallel to the optical axis between the intersection of the side of the third lens image on the optical axis and the inversion point of the optical axis of the third lens image side is represented by SGI321, which satisfies the following condition: 0<SGI311/ (SGI311+TP3) ≦ 0.9; 0 < SGI321 / (SGI321 + TP3) ≦ 0.9. Preferably, the following conditions are satisfied: 0.01 < SGI311 / (SGI311 + TP3) ≦ 0.7; 0.01 < SGI321 / (SGI321 + TP3) ≦ 0.7.

The horizontal displacement distance parallel to the optical axis between the intersection of the side of the third lens object on the optical axis and the inversion point of the second lens object near the optical axis is represented by SGI 312, and the side of the third lens image is on the optical axis. The horizontal displacement distance parallel to the optical axis between the intersection point of the second lens image side and the second inversion optical axis is represented by SGI322, which satisfies the following condition: 0<SGI312/(SGI312+TP3)≦0.9; 0<SGI322 /(SGI322+TP3)≦0.9. Preferably, the following conditions are satisfied: 0.1 ≦ SGI 312 / (SGI 312 + TP 3 ) ≦ 0.8; 0.1 ≦ SGI 322 / (SGI 322 + TP 3 ) ≦ 0.8.

The vertical distance between the inflection point of the optical axis and the optical axis of the side of the third lens object is represented by HIF311, and the intersection of the third lens image side on the optical axis and the optical axis of the optical axis near the side of the third lens image The vertical distance between them is represented by HIF321, which satisfies the following conditions: 0.01 ≦ HIF311/HOI ≦ 0.9; 0.01 ≦ HIF321/HOI ≦ 0.9. Preferably, the following conditions are satisfied: 0.09 ≦ HIF311 / HOI ≦ 0.5; 0.09 ≦ HIF321 / HOI ≦ 0.5.

The vertical distance between the inflection point of the second lens side near the optical axis and the optical axis is represented by HIF 312, and the intersection of the third lens image side on the optical axis to the third lens image side and the second optical axis is reversed. The vertical distance between the point and the optical axis is represented by HIF 322, which satisfies the following conditions: 0.01 ≦ HIF312 / HOI ≦ 0.9; 0.01 ≦ HIF 322 / HOI ≦ 0.9. Preferably, the following conditions are satisfied: 0.09 ≦ HIF312/HOI ≦ 0.8; 0.09 ≦ HIF322/HOI ≦ 0.8.

The vertical distance between the inflection point of the third lens side near the optical axis and the optical axis is represented by HIF 313, and the intersection of the third lens image side on the optical axis to the third lens image side and the third optical axis is reversed. The vertical distance between the point and the optical axis is represented by HIF323, which satisfies the following conditions: 0.001 mm ≦ | HIF 313 | ≦ 5 mm; 0.001 mm ≦ | HIF 323 | ≦ 5 mm. Preferably, the following conditions are satisfied: 0.1 mm ≦ | HIF 323 | ≦ 3.5 mm; 0.1 mm ≦ | HIF 313 | ≦ 3.5 mm.

The vertical distance between the inflection point of the fourth lens side near the optical axis and the optical axis is represented by HIF314, and the intersection of the third lens image side on the optical axis to the third lens image side is close to the optical axis. The vertical distance between the point and the optical axis is represented by HIF 324, which satisfies the following conditions: 0.001mm ≦|HIF314|≦5mm; 0.001mm ≦|HIF324|≦5mm. Preferably, the following conditions are satisfied: 0.1 mm ≦|HIF324|≦3.5 mm; 0.1 mm ≦|HIF314|≦3.5 mm.

An embodiment of the optical imaging system of the present invention can assist in the correction of the chromatic aberration of the optical imaging system by staggering the lenses having a high dispersion coefficient and a low dispersion coefficient.

The above aspheric equation is: z = ch ² / [1 + [1 (k + 1) c ² h ² ] ^0.5 ] + A4h ⁴ + A6h ⁶ + A8h ⁸ + A10h ¹⁰ + A12h ¹² + A14h ¹⁴ + A16h ¹⁶ +A18h ¹⁸ +A20h ²⁰ +... (1) where z is the position value with reference to the surface apex at the position of height h in the optical axis direction, k is the cone coefficient, c is the reciprocal of the radius of curvature, and A4 A6, A8, A10, A12, A14, A16, A18, and A20 are high-order aspherical coefficients.

In the optical imaging system provided by the present invention, the lens may be made of plastic or glass. When the lens is made of plastic, it can effectively reduce production cost and weight. In addition, when the lens is made of glass, it can control the thermal effect and increase the design space of the optical imaging system's refractive power configuration. In addition, the object side and the image side of the first lens to the third lens in the optical imaging system may be aspherical, which can obtain more control variables, in addition to reducing aberrations, even compared to the use of conventional glass lenses. The number of lenses used can be reduced, thus effectively reducing the overall height of the present optical imaging system.

Furthermore, in the optical imaging system provided by the present invention, if the surface of the lens is convex, in principle, the surface of the lens is convex at the near optical axis; if the surface of the lens is concave, in principle, the surface of the lens is at the near optical axis. Concave.

In addition, in the optical imaging system of the present invention, at least one light bar can be set according to requirements to reduce stray light and help to improve image quality.

In the optical imaging system of the present invention, the aperture configuration may be a front aperture or a center aperture, wherein the front aperture means that the aperture is disposed between the object and the first lens, and the center aperture means that the aperture is disposed on the first lens and Between the imaging surfaces. If the aperture is a front aperture, the optical imaging system can make a long distance between the exit pupil and the imaging surface to accommodate more optical components, and increase the efficiency of the image sensing component to receive images; if it is a center aperture, Helps to expand the system's field of view, giving optical imaging systems the advantage of a wide-angle lens.

The optical imaging system of this creation is more visually applicable to the optics of moving focus In the system, it combines the characteristics of excellent aberration correction and good image quality to expand the application level.

The optical imaging system of the present invention further includes a driving module that can be coupled to the lenses and cause displacement of the lenses. The aforementioned driving module may be a voice coil motor (VCM) for driving the lens to focus, or an optical anti-vibration element (OIS) for reducing the frequency of defocus caused by lens vibration during the shooting process.

The optical imaging system of the present invention further requires that at least one of the first lens, the second lens and the third lens be a light filtering component having a wavelength of less than 500 nm, which can be at least one of the lens having the specific filtering function. The coating on the surface or the lens itself is achieved by a material having a short wavelength that can be filtered out.

The imaging surface of the optical imaging system of the present invention is selected as a plane or a curved surface for more visual requirements. When the imaging surface is a curved surface (for example, a spherical surface having a radius of curvature), it helps to reduce the incident angle required to focus the light on the imaging surface, in addition to helping to achieve the length (TTL) of the miniature optical imaging system, Illumination also helps.

One aspect of the present invention is to provide a plastic lens positioning component which can be integrally formed. In addition to accommodating and positioning the lens of the present invention, the outer wall of the plastic lens positioning component further comprises at least two moldings. The irrigating marks can be arranged symmetrically around a central axis (for example, the optical axis) according to requirements, which can produce a relatively uniform thickness configuration and enhance the structural strength. If the outer wall of the plastic lens positioning element has two forming nozzle marks, the angle between the forming nozzle marks can be 180 degrees. If the outer wall of the plastic lens positioning element has three forming nozzle marks, the angle between the forming nozzle marks can be 120 degrees. The forming nozzle mark may be disposed on the outer wall of the object end or on the outer wall of the image end portion as required.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the light of the above-described embodiments, the specific embodiments are described below in detail with reference to the drawings.

First embodiment

Please refer to FIG. 1A and FIG. 1B , wherein FIG. 1A is a schematic diagram of an optical imaging system according to a first embodiment of the present invention. FIG. 1B is a left-to-right sequential optical imaging system of the first embodiment. Spherical aberration, astigmatism and optical distortion curves. Fig. 1C is a diagram showing the lateral aberration of the meridional diaphragm and the sagittal plane of the optical imaging system of the first embodiment, the longest operating wavelength and the shortest operating wavelength passing through the aperture edge at 0.7 field of view. As can be seen from FIG. 1A, the optical imaging system sequentially includes the first lens 110, the aperture 100, the second lens 120, the third lens 130, and the infrared from the object side to the image side. Line filter 170, imaging surface 180, and image sensing element 190.

The first lens 110 has a positive refractive power and is made of a plastic material. The object side surface 112 is a convex surface, and the image side surface 114 is a concave surface, and both are aspherical. The profile curve length of the maximum effective radius of the side of the first lens object is represented by ARS11, and the profile curve length of the maximum effective radius of the side of the first lens image is represented by ARS12. The length of the profile curve of the 1/2 incident pupil diameter (HEP) of the side of the first lens object is represented by ARE11, and the length of the profile curve of the 1/2 incident pupil diameter (HEP) of the side of the first lens image is represented by ARE12. The thickness of the first lens on the optical axis is TP1.

The second lens 120 has a negative refractive power and is made of a plastic material. The object side surface 122 is a concave surface, and the image side surface 124 is a convex surface, and both are aspherical surfaces, and the image side surface 124 has an inflection point. The horizontal displacement distance parallel to the optical axis between the intersection of the side of the second lens image on the optical axis and the inflection point of the optical axis closest to the side of the second lens image is represented by SGI221, which satisfies the following condition: SGI221=-0.1526 mm; SGI221|/(|SGI221|+TP2)=0.2292. The profile curve length of the maximum effective radius of the side of the second lens object is represented by ARS21, and the profile curve length of the maximum effective radius of the side of the second lens image is represented by ARS22. The length of the contour curve of the 1/2 incident pupil diameter (HEP) of the side surface of the second lens object is represented by ARE21, and the length of the contour curve of the 1/2 incident pupil diameter (HEP) of the side surface of the second lens image is represented by ARE22. The thickness of the second lens on the optical axis is TP2.

The vertical distance between the inflection point of the optical axis and the optical axis of the second lens image on the optical axis to the second lens image side is represented by HIF221, which satisfies the following conditions: HIF221=0.5606 mm; HIF221/HOI=0.3128 .

The third lens 130 has a positive refractive power and is made of a plastic material. The object side surface 132 is a convex surface, the image side surface 134 is a concave surface, and both are aspherical surfaces, and the object side surface 132 has two inflection points and the image side surface 134 has a Recurve point. The horizontal displacement distance parallel to the optical axis between the intersection of the side of the third lens object on the optical axis and the inversion point of the optical axis of the third lens object is represented by SGI311, and the intersection of the side of the third lens image on the optical axis is The horizontal displacement distance parallel to the optical axis between the inflection points of the nearest optical axis of the third lens image side is represented by SGI 321, which satisfies the following conditions: SGI311=0.0180 mm; SGI321=0.0331 mm; |SGI311|/(|SGI311|+ TP3)=0.0339;|SGI321|/(|SGI321|+TP3)=0.0605. The contour curve length of the maximum effective radius of the side surface of the third lens object is represented by ARS31, and the contour curve length of the maximum effective radius of the side surface of the third lens image is represented by ARS32. The length of the contour curve of the 1/2 incident pupil diameter (HEP) of the side surface of the third lens object is represented by ARE31, and the length of the contour curve of the 1/2 incident pupil diameter (HEP) of the side of the third lens image is ARE32 said. The thickness of the third lens on the optical axis is TP3.

The horizontal displacement distance parallel to the optical axis between the intersection of the side of the third lens object on the optical axis to the inflection point of the second lens object and the second optical axis is represented by SGI 312, which satisfies the following condition: SGI312=-0.0367mm ;|SGI312|/(|SGI312|+TP3)=0.0668.

The vertical distance between the inflection point of the optical axis and the optical axis of the side of the third lens object is represented by HIF311, and the intersection of the third lens image side on the optical axis and the optical axis of the optical axis near the side of the third lens image The vertical distance between them is represented by HIF321, which satisfies the following conditions: HIF311=0.2298 mm; HIF321=0.3393 mm; HIF311/HOI=0.1282; HIF321/HOI=0.1893.

The vertical distance between the inflection point of the second lens side near the optical axis and the optical axis is represented by HIF 312, which satisfies the following conditions: HIF312 = 0.8186 mm; HIF312 / HOI = 0.4568.

The infrared filter 170 is made of glass and is disposed between the third lens 130 and the imaging surface 180 without affecting the focal length of the optical imaging system.

In the optical imaging system of the first embodiment, the focal length of the optical imaging system is f, the incident pupil diameter of the optical imaging system is HEP, and the half of the maximum viewing angle in the optical imaging system is HAF, and the values are as follows: f=2.42952 mm; f/ HEP = 2.02; and HAF = 35.87 degrees and tan (HAF) = 0.7231.

In the optical imaging system of the first embodiment, the focal length of the first lens 110 is f1, and the focal length of the third lens 140 is f3, which satisfies the following conditions: f1=2.27233 mm; |f/f1|=1.0692; f3=7.0647 mm ;|f1|<f3; and |f1/f3|=0.3216.

In the optical imaging system of the first embodiment, the focal lengths of the second lens 120 to the third lens 130 are f2 and f3, respectively, which satisfy the following conditions: f2 = -5.2251 mm; and |f2|>|f1|.

The ratio of the focal length f of the optical imaging system to the focal length fp of each lens having a positive refractive power, the ratio of the focal length f of the optical imaging system to the focal length fn of each lens having a negative refractive power, the optical of the first embodiment In the imaging system, the sum of PPR of all positive refractive power lenses is Σ PPR=f/f1+f/f3=1.4131, and the sum of NPR of all negative refractive power lenses is Σ NPR=f/f2=0.4650, Σ PPR/| Σ NPR|=3.0391. The following conditions are also satisfied: |f/f3|=0.3439; |f1/f2|=0.4349;|f2/f3|=0.7396.

In the optical imaging system of the first embodiment, the first lens side 112 to the first The distance between the three lens image side surfaces 134 is InTL, the distance between the first lens object side surface 112 and the imaging surface 180 is HOS, the distance between the aperture 100 and the imaging surface 180 is InS, and the image sensing element 190 effectively senses the area diagonally. Half of the line length is HOI, and the distance between the third lens image side 134 and the imaging surface 180 is InB, which satisfies the following conditions: InTL+InB=HOS; HOS=2.9110 mm; HOI=1.792 mm; HOS/HOI=1.6244; HOS/f=1.1982; InTL/HOS=0.7008; InS=2.25447 mm; and InS/HOS=0.7745.

In the optical imaging system of the first embodiment, the sum of the thicknesses of all the refractive power lenses on the optical axis is Σ TP which satisfies the following conditions: TP TP = 1.4198 mm; and Σ TP / InTL = 0.6959. Thereby, the contrast of the system imaging and the yield of the lens manufacturing can be simultaneously taken into consideration and an appropriate back focus can be provided to accommodate other components.

In the optical imaging system of the first embodiment, the radius of curvature of the first lens object side surface 112 is R1, and the radius of curvature of the first lens image side surface 114 is R2, which satisfies the following condition: |R1/R2|=0.3849. Thereby, the first lens is provided with an appropriate positive refractive power to prevent the spherical aberration from increasing excessively.

In the optical imaging system of the first embodiment, the radius of curvature of the third lens side surface 132 is R5, and the radius of curvature of the third lens image side surface 144 is R6, which satisfies the following condition: (R5-R6) / (R5 + R6) =-0.0899. Thereby, it is advantageous to correct the astigmatism generated by the optical imaging system.

In the optical imaging system of the first embodiment, the individual focal lengths of the first lens 110 and the third lens 130 are f1 and f3, respectively, and the total focal length of all lenses having positive refractive power is Σ PP, which satisfies the following conditions: Σ PP = F1 + f3 = 9.3370 mm; and f1/(f1 + f3) = 0.2434. Thereby, it is helpful to appropriately distribute the positive refractive power of the first lens 110 to other positive lenses to suppress the generation of significant aberrations during the traveling of the incident light.

In the optical imaging system of the first embodiment, the individual focal lengths of the second lenses 120 are f2, and the sum of the focal lengths of all the lenses having negative refractive power is Σ NP, which satisfies the following condition: NP NP = f2 = -5.2251 mm. Thereby, it is helpful to suppress the occurrence of significant aberrations during the traveling of incident light.

In the optical imaging system of the first embodiment, the distance between the first lens 110 and the second lens 120 on the optical axis is IN12, which satisfies the following conditions: IN12=0.4068 mm; IN12/f=0.1674. Thereby, it helps to improve the chromatic aberration of the lens to improve its performance.

In the optical imaging system of the first embodiment, the thicknesses of the first lens 110 and the second lens 120 on the optical axis are TP1 and TP2, respectively, which satisfy the following conditions: TP1 = 0.5132 mm; TP2 = 0.3363 mm; and (TP1 + IN12) / TP2 = 2.7359. Thereby, it helps to control the sensitivity of the optical imaging system manufacturing and improve its performance.

In the optical imaging system of the first embodiment, the distance between the second lens 120 and the third lens 130 on the optical axis is IN23, which satisfies the following condition: (TP3 + IN23) / TP2 = 2.3308. Thereby, it helps to control the sensitivity of the optical imaging system manufacturing and reduce the overall height of the system.

In the optical imaging system of the present embodiment, the following conditions are satisfied: TP2/(IN12+TP2+IN23)=0.35154; TP1/TP2=1.52615; TP2/TP3=0.58966. Thereby, it helps the layer to slightly correct the aberration generated by the incident light and reduce the total height of the system.

In the optical imaging system of the first embodiment, the total thickness of the first lens 110 to the third lens 140 on the optical axis is Σ TP which satisfies the following condition: TP2 / Σ TP = 0.2369. This helps to correct aberrations caused by the incident light and reduce the overall height of the system.

In the optical imaging system of the first embodiment, the horizontal displacement distance of the third lens object side surface 132 from the intersection on the optical axis to the maximum effective radius position of the third lens object side surface 132 on the optical axis is InRS31, and the third lens image side surface 134 The horizontal effective displacement distance from the intersection on the optical axis to the third lens image side surface 134 on the optical axis is InRS32, and the thickness of the third lens 130 on the optical axis is TP3, which satisfies the following condition: InRS31=-0.1097 Mm; InRS32=-0.3195mm; |InRS31|+|InRS32|=0.42922mm;|InRS31|/TP3=0.1923; and |InRS32|/TP3=0.5603. Thereby, it is advantageous for the production and molding of the lens, and the miniaturization thereof is effectively maintained.

In the optical imaging system of the present embodiment, the vertical distance between the critical point C31 of the third lens object side surface 132 and the optical axis is HVT31, and the vertical distance between the critical point C32 of the third lens image side surface 134 and the optical axis is HVT32, which satisfies the following Conditions: HVT31 = 0.4455 mm; HVT32 = 0.6479 mm; HVT31 / HVT32 = 0.6876. Thereby, the aberration of the off-axis field of view can be effectively corrected.

The optical imaging system of this embodiment satisfies the following conditions: HVT32/HOI = 0.3616. Thereby, it contributes to the aberration correction of the peripheral field of view of the optical imaging system.

The optical imaging system of this embodiment satisfies the following conditions: HVT32/HOS = 0.2226. Thereby, it contributes to the aberration correction of the peripheral field of view of the optical imaging system.

In the optical imaging system of the first embodiment, the second lens 120 and the third lens 150 have a negative refractive power, the first lens has a dispersion coefficient of NA1, the second lens has a dispersion coefficient of NA2, and the third lens has a dispersion coefficient of NA3. , which meets the following conditions: |NA1-NA2| = 33.5951; NA3/NA2 = 2.4969. Thereby, it contributes to the correction of the chromatic aberration of the optical imaging system.

In the optical imaging system of the first embodiment, the TV distortion of the optical imaging system at the time of image formation is TDT, and the optical distortion at the time of image formation is ODT, which satisfies the following conditions: |TDT|=1.2939%; |ODT|=1.4381% .

Third lens In the optical imaging system of the present embodiment, the longest operating wavelength of the forward meridional plane fan pattern is incident on the imaging plane through the aperture edge. The lateral aberration of the field of view is represented by PLTA, which is 0.0028 mm (pixel size Pixel). The size is 1.12 μm), and the shortest working wavelength of the forward meridional plane fan pattern is incident on the imaging surface through the aperture edge. The lateral aberration of the field of view is represented by PSTA, which is 0.0163 mm (Pixel Size is 1.12 μm). The longest working wavelength of the negative meridional plane fan pattern is incident on the imaging plane through the aperture edge. The lateral aberration of the field of view is represented by NLTA, which is 0.0118 mm (Pixel Size is 1.12 μm), and the negative meridional plane fan The shortest operating wavelength of the graph is incident on the imaging plane through the aperture edge. The lateral aberration of the field of view is represented by NSTA, which is -0.0019 mm (Pixel Size is 1.12 μm). The longest working wavelength of the sagittal plane fan pattern is incident on the imaging plane through the aperture edge. The lateral aberration of the field of view is represented by SLTA, which is -0.0103 mm (Pixel Size is 1.12 μm), and the shortest sagittal plane fan pattern is obtained. The working wavelength is incident on the imaging plane through the aperture edge. The lateral aberration of the field of view is represented by SSTA, which is 0.0055 mm (Pixel Size is 1.12 μm).

Referring to FIG. 7 , the lens positioning component 794 of the embodiment is hollow and can accommodate any lens, and the lens segments are arranged on the optical axis. The lens positioning component includes an object end 796 and a Like the end portion 798, the object end portion 796 is adjacent to the object side and has a first opening 7792. The image end portion 798 has a second opening 7982 near the image side. The outer wall of the lens positioning member 794 includes two tangent planes 799. The cut planes 799 each have a molded irritant 7992. The inner diameter of the first opening 7792 is OD, and the inner diameter of the second opening 7982 is ID, which satisfies the following conditions: OD=0.7 mm; ID=1.8 mm; OD/ID=0.3889. The minimum thickness of the object end 796 is OT and the minimum thickness of the image end 798 is IT, which satisfies the following conditions: OT = 0.1 mm; IT = 0.3 mm; OT / IT = 0.33.

Refer to Table 1 and Table 2 below for reference.

According to Table 1 and Table 2, the values related to the length of the contour curve can be obtained:

Table 1 is the detailed structural data of the first embodiment of Fig. 1, in which the unit of curvature radius, thickness, distance, and focal length is mm, and the surfaces 0-10 sequentially represent the surface from the object side to the image side. Table 2 is the aspherical data in the first embodiment, wherein the cone surface coefficients in the a-spherical curve equation of k, and A1-A20 represent the first--20th-order aspheric coefficients of each surface. In addition, the following table of the embodiments corresponds to the schematic diagram and the aberration diagram of the respective embodiments, and the definitions of the data in the table are the same as those of the first embodiment and the second embodiment, and are not described herein.

Second embodiment

Please refer to FIG. 2A and FIG. 2B , wherein FIG. 2A is a schematic diagram of an optical imaging system according to a second embodiment of the present invention, and FIG. 2B is a left-to-right sequential optical imaging system of the second embodiment. Spherical aberration, astigmatism and optical distortion curves. Figure 2C is a lateral aberration diagram of the optical imaging system of the second embodiment at 0.7 field of view. As can be seen from FIG. 2A, the optical imaging system sequentially includes the first lens 210, the aperture 200, the second lens 220, the third lens 230, the infrared filter 270, the imaging surface 280, and the image sensing element from the object side to the image side. 290.

The first lens 210 has a negative refractive power and is made of a plastic material. The object side surface 212 is a convex surface, and the image side surface 214 is a concave surface, and both are aspherical.

The second lens 220 has a positive refractive power and is made of a plastic material. The object side surface 222 is a convex surface, and the image side surface 224 is a convex surface, and both are aspherical surfaces, and the object side surface 222 has an inflection point.

The third lens 230 has a positive refractive power and is made of a plastic material. The object side surface 232 is a convex surface, and the image side surface 234 is a convex surface, and both are aspherical surfaces, and the object side surface 232 has an inflection point.

The infrared filter 270 is made of glass and is disposed between the third lens 230 and the imaging surface 280 without affecting the focal length of the optical imaging system.

Please refer to Table 3 and Table 4 below.

In the second embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.

According to Tables 3 and 4, the following conditional values can be obtained:

According to Tables 3 and 4, the following conditional values can be obtained:

According to Table 3 and Table 4, the values related to the length of the contour curve can be obtained:

Third embodiment

Please refer to FIG. 3A and FIG. 3B , wherein FIG. 3A is a schematic diagram of an optical imaging system according to a third embodiment of the present invention, and FIG. 3B is a left-to-right sequential optical imaging system of the third embodiment. Spherical aberration, astigmatism and optical distortion curves. Figure 3C is a lateral aberration diagram of the optical imaging system of the third embodiment at 0.7 field of view. As can be seen from FIG. 3A, the optical imaging system sequentially includes the first lens 310, the aperture 300, the second lens 320, the third lens 330, the infrared filter 370, the imaging surface 380, and the image sensing element from the object side to the image side. 390.

The first lens 310 has a negative refractive power and is made of a plastic material. The object side surface 312 is a convex surface, and the image side surface 314 is a concave surface, and both are aspherical surfaces.

The second lens 320 has a positive refractive power and is made of a plastic material. The object side surface 322 is a convex surface, and the image side surface 324 is a convex surface, and both are aspherical surfaces, and the image side surface 324 has an inflection point.

The third lens 330 has a positive refractive power and is made of a plastic material. The object side surface 332 is a convex surface, and the image side surface 334 is a convex surface, and both are aspherical surfaces, and the image side surface 334 has an inflection point.

The infrared filter 370 is made of glass and is disposed between the third lens 330 and the imaging surface 380 without affecting the focal length of the optical imaging system.

Please refer to Table 5 and Table 6 below.

In the third embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.

According to Tables 5 and 6, the following conditional values can be obtained:

According to Tables 5 and 6, the following conditional values can be obtained:

According to Table 5 and Table 6, the values related to the length of the contour curve can be obtained:

Fourth embodiment

Please refer to FIG. 4A and FIG. 4B , wherein FIG. 4A is a schematic diagram of an optical imaging system according to a fourth embodiment of the present invention, and FIG. 4B is a left-to-right sequential optical imaging system of the fourth embodiment. Spherical aberration, astigmatism and optical distortion curves. Figure 4C is a lateral aberration diagram of the optical imaging system of the fourth embodiment at a field of view of 0.7. As can be seen from FIG. 4A, the optical imaging system sequentially includes the first lens 410, the aperture 400, the second lens 420, the third lens 430, the infrared filter 470, the imaging surface 480, and the image sensing element from the object side to the image side. 490.

The first lens 410 has a negative refractive power and is made of a plastic material. The object side surface 412 is a convex surface, and the image side surface 414 is a concave surface, and both are aspherical surfaces, and the object side surface 412 has an inflection point.

The second lens 420 has a positive refractive power and is made of a plastic material. The object side surface 422 is a convex surface, and the image side surface 424 is a convex surface, and both are aspherical surfaces, and the object side surface 422 has an inflection point.

The third lens 430 has a positive refractive power and is made of a plastic material. The object side surface 432 is a convex surface, the image side surface 434 is a convex surface, and both are aspherical surfaces, and the object side surface 432 has an inflection point and the image side surface 434 has two. Recurve point.

The infrared filter 470 is made of glass and is disposed between the third lens 430 and the imaging surface 480 without affecting the focal length of the optical imaging system.

Please refer to Table 7 and Table 8 below.

In the fourth embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.

According to Tables 7 and 8, the following conditional values can be obtained:

According to Tables 7 and 8, the following conditional values can be obtained:

According to Table 7 and Table 8, the values related to the length of the contour curve can be obtained:

Fifth embodiment

Please refer to FIG. 5A and FIG. 5B , wherein FIG. 5A is a schematic diagram of an optical imaging system according to a fifth embodiment of the present invention, and FIG. 5B is a left-to-right sequential optical imaging system of the fifth embodiment. Spherical aberration, astigmatism and optical distortion curves. Fig. 5C is a TV distortion curve of the optical imaging system of the fifth embodiment. As can be seen from FIG. 5A, the optical imaging system sequentially includes the first lens 510, the aperture 500, the second lens 520, the third lens 530, the infrared filter 570, the imaging surface 580, and the image sensing element from the object side to the image side. 590.

The first lens 510 has a negative refractive power and is made of a plastic material. The object side surface 512 is a convex surface, and the image side surface 514 is a concave surface, and both are aspherical surfaces, and the object side surface 512 has an inflection point.

The second lens 520 has a positive refractive power and is made of a plastic material. The object side surface 522 is a convex surface, and the image side surface 524 is a convex surface, and both are aspherical surfaces.

The third lens 530 has a positive refractive power and is made of a plastic material. The object side surface 532 is a convex surface, and the image side surface 534 is convex, and both are aspherical, and the object side surface 532 has a recurve. point.

The infrared filter 570 is made of glass and is disposed between the third lens 530 and the imaging surface 580 without affecting the focal length of the optical imaging system.

Please refer to the following list IX and Table 10.

In the fifth embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.

According to Table 9 and Table 10, the following conditional values can be obtained:

According to Table 9 and Table 10, the following conditional values can be obtained:

According to Table 9 and Table 10, the values related to the length of the contour curve can be obtained:

Sixth embodiment

Please refer to FIG. 6A and FIG. 6B , wherein FIG. 6A illustrates a sixth embodiment according to the present creation. Schematic diagram of the optical imaging system, and FIG. 6B is a left-to-right sequence of spherical aberration, astigmatism, and optical distortion of the optical imaging system of the sixth embodiment. Figure 6C is a lateral aberration diagram of the optical imaging system of the sixth embodiment at a field of view of 0.7. As can be seen from FIG. 6A, the optical imaging system sequentially includes the first lens 610, the aperture 600, the second lens 620, the third lens 630, the infrared filter 670, the imaging surface 680, and the image sensing element from the object side to the image side. 690.

The first lens 610 has a negative refractive power and is made of a plastic material. The object side surface 612 is a convex surface, and the image side surface 614 is a concave surface, and both are aspherical surfaces, and the object side surface 612 has an inflection point.

The second lens 620 has a positive refractive power and is made of a plastic material. The object side surface 622 is a concave surface, and the image side surface 624 is a convex surface, and both are aspherical.

The third lens 630 has a positive refractive power and is made of a plastic material. The object side surface 632 is a convex surface, and the image side surface 634 is a convex surface, and both are aspherical surfaces, and the object side surface 632 has an inflection point.

The infrared filter 670 is made of glass and is disposed between the third lens 630 and the imaging surface 680 without affecting the focal length of the optical imaging system.

Please refer to Table 11 and Table 12 below.

In the sixth embodiment, the aspherical curve equation represents the form as in the first embodiment. In addition, the definitions of the parameters in the following table are the same as those in the first embodiment, and are not described herein.

According to Table 11 and Table 12, the following conditional values can be obtained:

According to Table 11 and Table 12, the following conditional values can be obtained:

According to Table 11 and Table 12, the values related to the length of the contour curve can be obtained:

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any person skilled in the art can make various changes and refinements without departing from the spirit and scope of the present creation. The scope is subject to the definition of the scope of the patent application.

The present invention has been particularly shown and described with reference to the exemplary embodiments thereof, and it is understood by those of ordinary skill in the art that the spirit of the present invention as defined by the following claims and their equivalents Various changes in form and detail can be made in the context of the category.

200‧‧ ‧ aperture

210‧‧‧First lens

212‧‧‧ ‧ side

214‧‧‧like side

220‧‧‧second lens

222‧‧‧ ‧ side

224‧‧‧like side

230‧‧‧ third lens

232‧‧‧ ‧ side

234‧‧‧like side

270‧‧‧Infrared filter

280‧‧‧ imaging surface

290‧‧‧Image sensing components

Claims (25)

An optical imaging system comprising, in order from the object side to the image side, a first lens having a refractive power; a second lens having a refractive power; a third lens having a refractive power; an imaging surface; and a lens positioning An element, wherein the lens positioning element is hollow and can accommodate any lens, and the lens sheets are arranged on an optical axis, the lens positioning element includes an object end and an image end, the object end is near The object side has a first opening, the image end has a second opening near the image side, and the outer wall of the lens positioning element comprises at least two tangential planes, each of the tangential planes having at least one shaped irrigant, the optical imaging The system has three lenses having a refractive power, and at least one of the first lens to the third lens has a positive refractive power, and the focal lengths of the first lens to the third lens are f1, f2, and f3, respectively. The focal length of the system is f, the incident pupil diameter of the optical imaging system is HEP, and the first lens object side to the imaging surface has a distance HOS on the optical axis, and the first lens object side to the third lens image side is Light There is a distance InTL on the shaft, and half of the maximum viewing angle of the optical imaging system is HAF, and the intersection of any surface of any of the lenses with the optical axis is the starting point, and the contour of the surface is extended until the distance on the surface The optical axis 1/2 is incident on the coordinate point at the vertical height of the 瞳 diameter, and the length of the contour curve between the above two points is ARE, which satisfies the following conditions: 1 ≦ f / HEP ≦ 10; 0 deg < HAF ≦ 150 deg and 0.9 ≦ 2 (ARE / HEP) ≦ 2.0. The optical imaging system of claim 1, wherein the outer wall of the lens positioning element comprises at least three tangential planes, each of the tangential planes having at least one shaped irrigant. The optical imaging system of claim 1, wherein the first opening has an inner diameter of OD and the second opening has an inner diameter of ID, which satisfies the following condition: 0.1 ≦ OD / ID ≦ 10. The optical imaging system of claim 1, wherein the minimum thickness of the end of the object is OT and the minimum thickness of the image end is IT, which satisfies the following condition: 0.1 ≦ OT / IT ≦ 10. The optical imaging system of claim 1, wherein the optical imaging system has a TV distortion at the time of image formation, and the optical imaging system has an imaging height HOI perpendicular to the optical axis on the imaging surface, the optical imaging system The longest working wavelength of the forward meridional plane fan passes through the entrance pupil edge and is incident on the imaging plane at a lateral angle of 0.7HOI, represented by PLTA, and the shortest working wavelength of the forward meridional plane fan passes through the entrance pupil edge and The lateral aberration at 0.7HOI incident on the imaging plane is represented by PSTA, and the longest operating wavelength of the negative meridional fan passes through the entrance pupil edge and is incident on the imaging plane at 0.7HOI, and the lateral aberration is represented by NLTA. The shortest working wavelength of the negative meridional fan passes through the entrance pupil edge and is incident on the imaging plane at 0.7HOI, and the lateral aberration is represented by NSTA. The longest working wavelength of the sagittal plane fan passes through the entrance pupil edge and is incident on the Imaging The lateral aberration at 0.7HOI on the surface is represented by SLTA. The shortest operating wavelength of the sagittal plane fan passes through the entrance pupil edge and is incident on the imaging plane at 0.7HOI. The lateral aberration is represented by SSTA, which satisfies the following conditions: PLTA ≦100 μm; PSTA≦100 μm; NLTA≦100 μm; NSTA≦100 μm; SLTA≦100 μm; and SSTA≦100 μm; |TDT|<100%. The optical imaging system of claim 1, wherein the imaging surface is selectable as a plane or a curved surface. The optical imaging system of claim 1, wherein an intersection of an object side of the third lens on the optical axis is a starting point, and a contour of the surface is extended until a vertical height of the diameter of the optical axis from the optical axis 1/2 is incident. At the coordinate point, the length of the contour curve between the two points is ARE31, and the intersection of the image side of the third lens on the optical axis is the starting point, and the contour of the surface is extended until the surface is incident on the optical axis by 1/2. The coordinate curve at the vertical height of the diameter is ARE32, and the thickness of the third lens on the optical axis is TP3, which satisfies the following conditions: 0.05≦ARE31/TP3≦25; and 0.05≦ ARE32/TP3≦25. The optical imaging system of claim 1, wherein an intersection of the object side of the second lens on the optical axis is a starting point, and a contour of the surface is extended until a vertical height of the diameter of the incident axis from the optical axis is 1/2 At the coordinate point, the length of the contour curve between the two points is ARE21. The intersection of the image side of the second lens on the optical axis is the starting point, and the contour of the surface is extended until the surface is 1/2 from the optical axis. The coordinate curve at the vertical height of the entrance pupil diameter is ARE22, and the second lens is on the optical axis. The thickness is TP2, which satisfies the following conditions: 0.05 ≦ ARE21 / TP2 ≦ 25; and 0.05 ≦ ARE22 / TP2 ≦ 25. The optical imaging system of claim 1, further comprising an aperture, and having a distance InS from the aperture to the imaging plane on the optical axis, which satisfies the following formula: 0.2 ≦ InS/HOS ≦ 1.1. An optical imaging system comprising, in order from the object side to the image side, a first lens having a refractive power; a second lens having a refractive power; a third lens having a refractive power; an imaging surface; and a lens positioning An element, wherein the lens positioning element is hollow and can accommodate any lens, and the lens sheets are arranged on an optical axis, the lens positioning element includes an object end and an image end, the object end is near The object side has a first opening, the image end has a second opening near the image side, and the outer wall of the lens positioning element comprises at least two tangential planes, each of the tangential planes having at least one shaped irrigant, the optical imaging The system has three lenses having a refractive power and at least one surface of at least one of the first lens to the third lens has at least one inflection point, and at least one of the second lens to the third lens has Positive refractive power, the focal length of the first lens to the third lens are f1, f2, f3, respectively, the focal length of the optical imaging system is f, the incident pupil diameter of the optical imaging system is HEP, the first lens side Up to the imaging surface having a distance HOS on the optical axis, the first lens object side to the third lens image side having an optical axis At a distance of InTL, half of the maximum viewing angle of the optical imaging system is HAF, and the intersection of any surface of any of the lenses with the optical axis is the starting point, and the contour of the surface is extended until the optical axis 1 is /2 The coordinate point at the vertical height of the entrance pupil diameter, the length of the contour curve between the above two points is ARE, which satisfies the following conditions: 1≦f/HEP≦10; 0deg<HAF≦150deg and 0.9≦2(ARE/ HEP) ≦ 2.0. The optical imaging system of claim 10, wherein the outer wall of the lens positioning element comprises at least three tangential planes, each of the tangential planes having at least one shaped irrigant. The optical imaging system of claim 10, wherein the first opening has an inner diameter of OD and the second opening has an inner diameter of ID, which satisfies the following condition: 0.1 ≦ OD / ID ≦ 10. The optical imaging system of claim 10, wherein the minimum thickness of the end of the object is OT and the minimum thickness of the image end is IT, which satisfies the following condition: 0.1 ≦ OT / IT ≦ 10. The optical imaging system of claim 10, wherein a maximum effective radius of any one of the lenses is represented by EHD, and an intersection of any one of the lenses and the optical axis is a starting point, The contour of the surface is extended until the maximum effective radius of the surface is the end point, and the profile curve length between the two points is ARS, which satisfies the following formula: 0.9 ≦ ARS / EHD ≦ 2.0. The optical imaging system of claim 10, wherein the optical imaging system has an imaging height HOI perpendicular to the optical axis on the imaging surface, and the longest operating wavelength of the forward meridional optical fan of the optical imaging system passes through the incident 瞳Edge incorporation The lateral aberration at 0.7HOI on the imaging plane is expressed by PLTA, and the shortest working wavelength of the forward meridional plane fan passes through the entrance pupil edge and is incident on the imaging plane. The lateral aberration at 0.7HOI is represented by PSTA. The longest working wavelength of the negative meridional plane fan passes through the entrance pupil edge and is incident on the imaging plane at 0.7HOI, and the lateral aberration is represented by NLTA, and the shortest working wavelength of the negative meridional plane fan passes through the entrance pupil edge and The lateral aberration at 0.7HOI incident on the imaging plane is represented by NSTA, and the longest operating wavelength of the sagittal plane fan passes through the entrance pupil edge and is incident on the imaging plane at 0.7HOI. The lateral aberration is represented by SLTA, and the sagittal plane The shortest operating wavelength of the light fan passes through the entrance pupil edge and is incident on the imaging surface at 0.7HOI. The lateral aberration is represented by SSTA, which satisfies the following conditions: PLTA ≦ 50 μm; PSTA ≦ 50 μm; NLTA ≦ 50 μm; NSTA ≦ 50 μm; SLTA ≦ 50 μm; and SSTA ≦ 50 μm. The optical imaging system of claim 10, wherein a distance between the first lens and the second lens on the optical axis is IN12, and the following formula is satisfied: 0<IN12/f≦60. The optical imaging system of claim 10, wherein a distance between the second lens and the third lens on the optical axis is IN23, and thicknesses of the second lens and the third lens on the optical axis are respectively TP2 and TP3, which satisfies the following conditions: 1 ≦ (TP3 + IN23) / TP2 ≦ 10. The optical imaging system of claim 10, wherein a distance between the first lens and the second lens on the optical axis is IN12, the first lens and the second through The thickness of the mirror on the optical axis is TP1 and TP2, respectively, which satisfy the following conditions: 1 ≦ (TP1 + IN12) / TP2 ≦ 10. The optical imaging system of claim 10, wherein at least one of the first lens, the second lens, and the third lens is a light filtering element having a wavelength of less than 500 nm. An optical imaging system comprising, in order from the object side to the image side, a first lens having a refractive power; a second lens having a refractive power; a third lens having a refractive power; an imaging surface; and a lens positioning An element, wherein the lens positioning element is hollow and can accommodate any lens, and the lens sheets are arranged on an optical axis, the lens positioning element includes an object end and an image end, the object end is near The object side has a first opening, the image end has a second opening near the image side, and the outer wall of the lens positioning element comprises at least three tangential planes, each of the tangential planes having at least one shaped irrigant, the optical imaging The system has three lenses having a refractive power, and at least one of the second lens to the third lens has a positive refractive power, and the focal lengths of the first lens to the third lens are f1, f2, and f3, respectively. The focal length of the system is f, the incident pupil diameter of the optical imaging system is HEP, and the first lens object side to the imaging surface has a distance HOS on the optical axis, and the first lens object side to the third lens image side is Light There is a distance InTL on the shaft, half of the maximum viewing angle of the optical imaging system is HAF, and any of the lenses The intersection of the surface and the optical axis is the starting point, and the contour of the surface is extended until the coordinate point on the surface at a vertical height from the optical axis 1/2 incident 瞳 diameter, and the length of the contour curve between the two points is ARE, which satisfies The following conditions were: 1 ≦ f / HEP ≦ 10; 0 deg < HAF ≦ 150 deg and 0.9 ≦ 2 (ARE / HEP) ≦ 2.0. The optical imaging system of claim 20, wherein the first opening has an inner diameter of OD and the second opening has an inner diameter of ID, which satisfies the following condition: 0.1 ≦ OD / ID ≦ 10. The optical imaging system of claim 20, wherein the minimum thickness of the object end is OT and the minimum thickness of the image end is IT, which satisfies the following condition: 1 ≦ OT / IT ≦ 10. The optical imaging system of claim 20, wherein an intersection of the object side of the third lens on the optical axis is a starting point, and a contour of the surface is extended until a vertical height of the diameter of the optical axis from the optical axis of 1/2 is incident. At the coordinate point, the length of the contour curve between the two points is ARE31, and the intersection of the image side of the third lens on the optical axis is the starting point, and the contour of the surface is extended until the surface is incident on the optical axis by 1/2. The coordinate curve at the vertical height of the diameter is ARE32, and the thickness of the third lens on the optical axis is TP3, which satisfies the following conditions: 0.05≦ARE31/TP3≦25; and 0.05≦ ARE32/TP3≦25. The optical imaging system of claim 20, wherein an intersection of the object side of the second lens on the optical axis is a starting point, and a contour of the surface is extended until a vertical height of the surface of the second lens from the optical axis is 1/2. At the coordinate point of the point, the length of the contour curve between the two points is ARE21, and the intersection of the image side of the second lens on the optical axis is the starting point. The contour of the surface is up to a coordinate point on the surface at a vertical height from the optical axis 1/2 incident to the diameter of the pupil. The length of the contour curve between the two points is ARE22, and the thickness of the second lens on the optical axis is TP2. It satisfies the following conditions: 0.05 ≦ ARE21/TP2 ≦ 25; and 0.05 ≦ ARE22/TP2 ≦ 25. The optical imaging system of claim 20, wherein the optical imaging system further comprises an aperture, an image sensing component, and a driving module, the image sensing component is disposed on the imaging surface, and the aperture is to the imaging The mask has a distance InS, and the driving module is coupled to the lenses and causes displacement of the lenses, which satisfies the following formula: 0.2 ≦ InS/HOS ≦ 1.1.